This object is considered a war loss (as of August 2005). A description of the mask cannot be found in the acquisition and processing documents. However, the old card index partially reproduced here shows the inside inscription (presumably made by the curator of the collection at the time, Wilhelm Grube, around 1890): Under the date at the top, the name of the Nô master carver 満永 (Mitsunaga)+ a reproduction of his "Werkmeistermarke" is noted on the left. The attribution to the master Deme Genkyû Mitsunaga 出目元休満永 cannot be verified at present. (Comment by Siegmar Nahser, 2005)